USING LAYERED MULTI-STREAM VIDEO CODING TO PROVIDE INCENTIVES IN P2P LIVE STREAMING
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United States of America Patent
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Issued Date -
Feb 5, 2009
app pub date -
Jun 25, 2008
filing date -
Jun 28, 2007
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Abandoned
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Abstract
A distributed incentive mechanism is provided for peer-to-peer (P2P) streaming networks, such as mesh-pull P2P live streaming networks. Video (or audio) may be encoded into multiple sub-streams such as layered coding and multiple description coding. The system is heterogeneous with peers having different uplink bandwidths. Peers that upload more data (to a peer) receive more substreams (from that peer) and consequently better video quality. Unlike previous approaches in which each peer receives the same video quality no matter how much bandwidth it contributes to the system, differentiated video quality, commensurate with a peer's contribution to other peers, is provided, thereby discouraging free-riders.
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